These running shoes are built with responsive BOOST cushioning to energize your stride. They have a narrower heel to eliminate slip, and a lower instep curve for a snug fit. Foot-hugging adidas PRIMEKNIT supports and enhances each step, and a Linear Energy Push system keeps you going longer. Made with a series of recycled materials, this upper features at least 50% recycled content. This product represents just one of our solutions to help end plastic waste.